The TM28C256A-150 is a 256K (32K x 8) CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by SEEQ Technology. This memory chip is designed for non-volatile data storage in a variety of embedded systems. The '150' in the part number typically indicates an access time of 150 nanoseconds.

Applications

• Embedded Systems: Storing configuration data and firmware in embedded devices.
• Industrial Control Equipment: Maintaining settings and calibration data.
• Telecommunications Equipment: Storing network configuration parameters.
• Instrumentation: Retaining calibration information in test and measurement devices.
• BIOS Storage: Storing BIOS settings in older computer systems.

Features

• 256Kbit (32K x 8) Capacity: Provides ample storage for program code and data.
• Fast Access Time: 150ns access time allows for quick data retrieval.
• CMOS Technology: Low power consumption compared to older technologies.
• Electrically Erasable: Can be erased and reprogrammed electrically, allowing for in-system updates.
• Byte-Alterable: Allows for individual bytes to be written or erased without affecting other memory locations.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• In-System Reprogrammability: Allows for convenient firmware updates without physically removing the chip.
• Low Power Consumption: Suitable for battery-powered applications.
• Reliable Data Retention: Ensures data integrity over extended periods.
• Simple Interface: Easy to integrate into existing systems using standard memory interfaces.

Technical Specifications: The TM28C256A-150 operates on a single 5V power supply. It features a standard 28-pin DIP (Dual In-line Package). The access time is 150ns, and it supports both read and write operations. The chip's endurance is typically rated for a certain number of erase/write cycles. Refer to the SEEQ datasheet for complete specifications regarding voltage levels, timing diagrams, and environmental operating conditions.